Home / 1,274.54-1,758.81-778.01

Finding the Fourth Proportional to 1,274.54, 1,758.81 and 778.01

Calculator

Solution

The fourth proportional to 1,274.54, 1,758.81 and 778.01 is: 1,073.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274.54 : 1,758.81 = 778.01 : x
  2. Step 2: Convert to fraction form
    1,274.54/1,758.81 = 778.01/x
  3. Step 3: Cross multiply
    1,274.54x = 1,758.81 × 778.01
  4. Step 4: Simplify right side
    1,274.54x = 1,368,365.89
  5. Step 5: Solve for x
    x = 1,368,365.89/1,274.54
  6. Step 6: Final answer
    x = 1,073.62

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.